Post the lunch meet, both the father-daughter duo was seen smiling as they left the place where Arnold also regularly meets his son Patrick.

In May, Katherine had hinted that her father's scandal does not mean the end of their relationship.

"Sometimes we forgive people because we want them back in our lives," wrote Katherine on the micro-blogging site Twitter.

Arnold and his wife Maria Shriver recently separated after 25 years of marriage, following the Terminator star's confession that he had fathered a lovechild with their family housekeeper, Mildred Baena.